Help Roland Prelude User Performance (save and reload)

Well here the lcd with my user performance saved: http://img839.imageshack.us/img839/7591/photo0029qs.jpg
using command "write performance"
As you can see i saved two guitar sounds, i also changed other parameter as mfx , etc.
I stored too it into usb pen drive using "save sound/system"
When i switch off the Prelude and reswitch it on i found all the user Perfomances (including the above one) but ALL with default sounds/mfx.....
How to recall my Performance settings i stored??